My fahaka, and my channa fireback. They seems too tolerante eachother, they share tank with a fireel,spotted gar and ancistrus. Never had problems with them. The badest of them is the snakehead, he can bump into the other with the head if they Come to his spot. My toughts Is that you need too give all the fishes thier own space, good vegetation and hideing spots,introduce them as juvinile, not feed much living Food to prevent agresion,luck with the fishes temperament, and dont let them go to hungry hehe.
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